Improvement in sewing-machines



F. H. BROWN.

SEWING-MACHINES.

No. 183,836. Patented o1-..s1,1s'ze.

WITNESSES. INVENTUR.

emu/64 m HE V flan Wm.

UNITED STATES FRANKLIN H. BROWN, OF INDIANAPOLIS, INDIANA, (WILLIAM P.BROWN,

PATENT OFFICE.

ADMINISTRATOR.)

IMPROVEMENT lN SEWING-MACHINES.

Specification forming part of Letters Patent No. 1 83.836, dated October31, 1876; application filed June 7, 1875.

To all whom it may concern Be it known that I, FRANKLIN H. BROWN, ofIndianapolis, in the county of Marion and State of Indiana, haveinvented certain new and useful Improvements in Sewing-Machines, ofwhich improvements the following is a full, clear, and exactdescription, which will enable others skilled in the art to which myinvention appertains to make and use the said improvements, referencebeing had to the accompanying drawings, forming a part hereof, and inwhich- Figure 1 is a side or front elevation of a sewing-machine towhich my improvements are applied; Fig. 2, a representation of thefeed-shield detached, and as viewed from the end of the machine; Fig. 3,a view of the same as seen from the front of the machine.

Like letters of reference indicate like parts.

My invention relates to the means employed for the purpose of preventingthe thread from being caught by the feed-bar, and for steadying themovement of the vibrating arm, substantially as hereinafter set forth.

K is the feed-shield. This shield lies on the outside of the face-plate,and below the feedbar, and above the orbit in which the shuttlecarrieris moved,as represented in Fig.1. The form of the shield is such thatthe action of the feed-bar, needle, shuttle, and shuttle-carrier is notthereby interfered with, and it is so constructed and arranged that thethread is prevented from being caught by the feedbar. I have clearlyshown in Figs. 2 .and 3 the form of shield which I deem preferable forthe purpose of accomplishing these results, and in the broad part of theshield I make a hole or opening, it, to allow the lint and dust to fallaway, which would otherwise be collected. It will also be perceived byreference to Figs. 2 and 3 that the shield K is attached to theneedle-plate.

O is a guard attached to the bed-plate, and arranged for contact withthe heel of the vibrating arm A. This contact prevents the lower part ofthe arm from being tilted laterally by the grooved cam B, which vibratesit, and thus prevents unnecessary friction of the arm upon its bearing.Packing should be arranged between the bed-plate and the guard, untilthe latter is thereby properly adjusted with relation to that part ofthe arm with which it is intended to be in contact. The guard should notbe crowded upon the arm, but should be so arranged with relation to itas to prevent the lateral movement referred to without creating too muchfriction.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The shield K, constructed substantially as shown and described, incombination with the feed-bar and the vertical faceplate, the saidshield being arranged externally to the said face-plate and below thefeed-bar, and above the circuit in which the shuttle-carrier is moved,substantially as and for the purposes specified.

2. The combination of the guard 0 and vibrating arm A, substantially asand for the purposes specified.

FRANKLIN H. BROWN. Witnesses:

O. E. SEYMOUR, GEo. K. PERRIN.

